English verb conjugation MUST IMPUGN

Regular verb: impugn - impugned - impugned

Affirmation

Simple form

I must impugn
you must impugn
he must impugn
we must impugn
you must impugn
they must impugn

V-ing form

I must be impugning
you must be impugning
he must be impugning
we must be impugning
you must be impugning
they must be impugning

Perfect

I must have impugned
you must have impugned
he must have impugned
we must have impugned
you must have impugned
they must have impugned

V-ing perfect

I must have been impugning
you must have been impugning
he must have been impugning
we must have been impugning
you must have been impugning
they must have been impugning

Negation

Simple form

I mustn't impugn
you mustn't impugn
he mustn't impugn
we mustn't impugn
you mustn't impugn
they mustn't impugn

V-ing form

I mustn't be impugning
you mustn't be impugning
he mustn't be impugning
we mustn't be impugning
you mustn't be impugning
they mustn't be impugning

Perfect

I mustn't have impugned
you mustn't have impugned
he mustn't have impugned
we mustn't have impugned
you mustn't have impugned
they mustn't have impugned

V-ing perfect

I mustn't have been impugning
you mustn't have been impugning
he mustn't have been impugning
we mustn't have been impugning
you mustn't have been impugning
they mustn't have been impugning

Interrogative form

Simple form

must I impugn?
must you impugn?
must he impugn?
must we impugn?
must you impugn?
must they impugn?

V-ing form

must I be impugning?
must you be impugning?
must he be impugning?
must we be impugning?
must you be impugning?
must they be impugning?

Perfect

must I have impugned?
must you have impugned?
must he have impugned?
must we have impugned?
must you have impugned?
must they have impugned?

V-ing perfect

must I have been impugning?
must you have been impugning?
must he have been impugning?
must we have been impugning?
must you have been impugning?
must they have been impugning?

Interro-negative form

Simple form

mustn't I impugn?
mustn't you impugn?
mustn't he impugn?
mustn't we impugn?
mustn't you impugn?
mustn't they impugn?

V-ing form

mustn't I be impugning?
mustn't you be impugning?
mustn't he be impugning?
mustn't we be impugning?
mustn't you be impugning?
mustn't they be impugning?

Perfect

mustn't I have impugned?
mustn't you have impugned?
mustn't he have impugned?
mustn't we have impugned?
mustn't you have impugned?
mustn't they have impugned?

V-ing perfect

mustn't I have been impugning?
mustn't you have been impugning?
mustn't he have been impugning?
mustn't we have been impugning?
mustn't you have been impugning?
mustn't they have been impugning?

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